(adsbygoogle = window.adsbygoogle || []).push({}); HELP!!! i cant think of the formula!

1. The problem statement, all variables and given/known data

A 0,05kg golf ball is driven from the tee at a speed of 80m/s. if the average accelerating force on the ball is 6500N, determine how long the clubhead is in contact with the ball.

2. Relevant equations

3. The attempt at a solution

I have sat staring at this question for awhile. could somebody please help me out so i can substitute...?

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# HELP i cant think of the formula!

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